Heating apparatus for fluids.



No. 849,878. PATENTED APR. 9, 1907.

' A. ZIVI.

HEATING APPARATUS FOR FLUIDS.

APPLIOATION mum Nov.14, 190a.

HEATING APPARATUS FORIFLUIDS.

Specification of Letters Patent.

Patented April 9, 1907.

Application filed November 14, 1906. -Serial No. 343,466.

To all whom it may concern:

Be it known that I, AnoLr- ZIVI, manufactiu'er, a citizen of Mannheim, and a subject of the Grand Duke of Baden, residing at Mannheim, Grand Duchy of Baden, in the Empire of Germany, have invented certain new and useful Improvements in Heating Apparatus for Fluids, of which the following is a full, clear, and exact description.

The present invention has for its object an apparatus composed of plates for heating water.

This heating apparatus is of the kind in which the water flows from an admission-reservoir through plates traversed by assages toward a discharge-reservoir, while t eintervals between the heating-cells formed by each pair of connected plates are traversed by the hot gases.

In accordance with the invention, all the passages of each plate referred to above are connected at regular intervals by transverse passages, by which means, first, the heating-surface is increased; second, each plate is stiffened transversely; third, should a longitudinal passage become blocked at any place only the portion situated between the two adj acent transverse passages is rendered inoperative and not the whole passage, as hitherto. Further, owing to the large total free cross-section of the passages of the parallelly-arranged cells no appreciable deposit of water-furstone takes place, such as would impede the operation of the apparatus.

A constructional form of the object of the invention is illustrated, by way of example, in the accompanying drawings, in which Figure 1 shows the same in elevation. Fig. 2 represents a section on the line A B of Fig. 1. Fig. 3 represents a section on the line C D of Figs. 1 and 2. Fig. 4 shows in section a special resilient lap-joint between two heating-cells; and Figs. 5 and 6 illustrate, by way of example, two additional forms of plate suitable for employment in the present invention.

The cold water enters the admission-reservoir a, Figs. 1 and 3, through the pipe I), Fig. 1, flows through the heating-cells 0 toward the discharge-chamber d, from which it issues through the pipe 0. Each of the heating-cells 0 consists of two plate walls f and g, of which the longitudinal seams on both sides are formed by lapping and soldering. Lengthwise the plate walls are provided with appropriate protuberances h and 'i, Fig. 2, staggered relatively to each other and which keep theplate walls apart in such a manner that a number of longitudinal passages k are formed, which, as a whole, constitute a heating-cell. The water flows from the chamber a toward the chamber d. The plates f and g are also provided 'with'protuberanees Z and m, which are provided across to the passages 7c and arranged one to the other in such a manner as to form passages n, through which all the longitudinal passages k of each heating-cell c are connected one with the other at regular intervals. These transverse passages n facilitate the circulation of the water, increase the heating-surface, and stiffen the plates in the transverse direction. This stiffening renders the heating apparatus proof against shocks and vibration, and in addition the transverse passages insures the advantage that should one of the longitudinal passages become blocked at any place only that portion of this longitudinal passage is rendered inoperative which is situated between the two immediately-adj acent transverse passages.

The heating-gases which are made in the furnace q, having thegrate r, flow through the intervals between the separate heatingcells a, for example, in the direction indicated by the arrow in Fig. 2. As shown in Fig. 3, the separate heating-cells are connected one with the other by lap-jointingfgby means of U-shaped intermedlateipartsg0. This method of jointing forms a very strong, but at the same time elastic, connection between the separate cells and resents the further advantage that each of t e cells may be completely finished before they are assembled. If it is, desired to obtain still further elasticity in the connection than the jointing members 0 will permit of, a ointing member p, rovided wlth an intermediate bend, is emp oyed, as shown in Fig. 4.

The cells illustrated in Figs. 5 and 6 differ from those already described only by a modified arrangement and conformation of the longitudinal passages.

Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed, I declare that what I claim is 1. In a heating apparatus a series of-pairs of plates, the plates of each pair being arranged a small distance apart, each plate having a plurality of ribs projecting into the space between said tightly connected to a l the plates, and open lates, two reservoirs to the s aces between the plates of each pair, means or tightly connectlng those edges of the plates of each pair not connected to the chambers, fluid-channels connected to said chambers, gas-passages between each two pairs of plates, means for reducing hot gases, passages situated to lea such gases to the passages between the (pairs of lates, another gas-passage situate to lea the gases awayafter having passed through the spaces between the pairs of plates, substantia ly as set forth.

' 2. In a heating apparatus a series of pairs of plates, the plates of each pair being arranged a smal distance apart, each plate having a plurality of ribs projecting into the space between said plates, the arrangement of said ribs being such, that the ribs of one late of each air of plates enter the space etween the ri s of the other late, two reservoirs tightly connected to al the plates, and open to the spaces between the plates of each pair, means for tightl connecting those edges of the 'lates of eac pair not connected to the cham ers, fluid-channels connected to said chambers, gas-passages between each two pairs of plates, means for roducing hot gases, passages situated to lea such gases to the passages between the airs of plates, an other gas-passage situated to lead the gases away after having passed through the s aces between the pairs of plates, substantially as set forth.

3. In a heating apparatus a series of pairs of plates, the plates of each pair being arranged a small distance a art, each plate the plates of each pair not connected to the chambers, fluid-channels connected to said chambers, gas-passages between each two pairs of plates, means for roducing hot gases, passages situated to lea such gases to the passages between the airs of plates, another gas-passage situated to. lead the gases away, having passed through the spaces between the pairs of plates, channels impressed into the plates in contrary direction to the said ribs and situated at an angle to the latter, substantially as set forth.

4. In a heating apparatus a series of pairs of plates, the plates of each pair being arranged a small distance apart, each plate having a plurality of ribs projecting into the space between said plates, the arrangement of said ribs being such, that the ribs of one late of each air of plates enter the space etween the ri s of the other plate, two reservoirs tightly connected to all the plates, and open to the spaces between the plates of each pair, means for tightly connecting those edges of the plates of each pair not connected to the chambers, fluid-channels connected to said chambers, gas-passages between each two pairs of plates, means for roducing hot gases, passages situated to lead such gases to the passages between the airs of lates, another gas-passage situated to lea the gases away after having passed through the spaces between theairs of plates, channels impressed into t e plates in contrary direction to the said ribs and situated at an angle to the latter, substantially as set forth.

In witness whereof I subscribe my signahaving a plurality of ribs projecting into the I ture in presence of two witnesses.

s ace 1 between said lates, two reservoirs tightly connected to a l the plates, and open to the spaces between the plates of each pair, means for tightly connecting those edges of ADOLF ZIVI. Witnesses:

H. W. HARRIs, Jos. H. LEUTE. 

